I would recommend Churchill College in the west, they have no entrance fee. Do you require free parking or internet for your hotel?
No, just a moderate hotel in the same area as the college. Free wifi is nice though.
attraction-area attraction-type hotel-area hotel-internet hotel-pricerange hotel-type
attraction-area attraction-type hotel-area hotel-internet hotel-pricerange hotel-type
attraction-area attraction-name attraction-type hotel-area hotel-internet hotel-pricerange hotel-type
attraction-area attraction-type hotel-area hotel-internet hotel-pricerange hotel-type